Birds across the Americas are getting smaller and longer-winged as the world warms, and the smallest-bodied species are changing the fastest. Birds across the Americas are getting smaller and ...

The number of eggs a bird lays — its clutch size — varies greatly among species. You might think every species should simply lay lots of eggs because that would increase the odds of more young birds ...

How does an ecosystem distribute its energy across body sizes? A new study suggests the answer depends on where you are—and ...

Climate change is not only driving the extinction of many bird species, but it may also mean that the birds that survive will have less diverse physical features. In the last 50 years, the US and ...

Eleanor has an undergraduate degree in zoology from the University of Reading and a master’s in wildlife documentary production from the University of Salford. Eleanor has an undergraduate degree in ...